考虑产品质量控制的激光3D打印系统设计

Design of laser 3D printing system considering product quality control

部分生产企业为降低成本,并为后续的规模生产提供前期参考样本,会在规模生产前对产品进行有必要激光3D打印,为保证样品参考质量,有必要提升激光3D打印控制精度,缩短激光3D打印时间。为实现这一目标,设计了一种考虑产品质量控制的激光3D打印系统。首先对系统框架进行设计,将其分为上位机层、中间层和下位机层;关键硬件组成包括微控制器、交换机、步进电机、温控单元组件以及激光3D打印机;软件部分对其主程序以及三个子程序(待打印产品三维模型建立子程序、信息文件格式转换程序、产品图像打印子程序)进行设计。系统实现与测试结果证明:设计系统的控制精度较强,精度最高可达到99%,且打印误差率较低,仅为1%,打印时间较短,最低仅为302 s,以期通过研究为提升激光3D打印控制精度,缩短激光3D打印时间提供一定帮助。

In order to reduce costs and provide early reference samples for subsequent mass production,some manufacturers will conduct necessary laser 3D printing of products before mass production.In order to ensure the qual-ity of sample reference,it is necessary to improve the control accuracy of laser 3D printing and shorten the laser 3D printing time.To achieve this goal,this paper designs a laser 3D printing system considering product quality control.Firstly,the system framework is designed,which is divided into upper computer layer,middle computer layer and low-er computer layer;Key hardware components include microcontroller,switch,stepping motor,temperature control unit components and laser 3D printer;The software part designs the main program and three subprograms(the subprogram of 3D model establishment of the product to be printed,the information file format conversion program,and the product image printing subprogram).The system realization and test results prove that the control accuracy of the designed sys-tem is strong,with the highest accuracy of 99%,and the printing error rate is low,only 1%,and the printing time is short,with the lowest being only 302s.This study is expected to provide some help for improving the control accuracy of laser 3D printing and shortening the laser 3D printing time.